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Development Characteristics and Tectonic Evolution of Cenozoic Strata in Kunteyi Depression

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  • 1.Key Laboratory of Petroleum Resources Research,Institute of Geology and Geophysics,Chinese Academy of Sciences,Lanzhou 730000,China; 
    2.Exploratory and Development Institute of  Qinghai Oilfield Company,PetroChina,  Dunhuang  736202,China

Received date: 2010-04-17

  Revised date: 2010-05-25

  Online published: 2011-02-10

Abstract

Kunteyi depression is located in western fault block of northwestern Qaidam basin, near the Lenghu structure zone and Eboliang structure zone. It is one of the most important potential areas of oil and gas exploration in northwestern Qaidam basin. By analyzing the Mesozoic and Cenozoic stratigraphic characteristics and geological interpretation of seismic data,the paper comes to conclusion that the prototype basin of Kunteyi depression was extrusion\|type and intersected block depression in Mesozoic because of a large number of intersected block in depression. With Himalayan tectonic movement and Altyn Tagh fault activities, Qaidam basin was in the pressure\|shear stress field in Cenozoic. Kunteyi depression was also in the pressure-shear stress field and developed into extrusion\|type depression in Cenozoic. With the Altyn Tagh fault activities,Kunteyi depression was in the pressure\|shear stress field in Cenozoic. The deep structural belt began to develop in early Cenozoic and formed in Quaternary.

Cite this article

SUN Guo-Qiang, ZHAO Ming-Jun, GUO Jian-Ming, WANG Xu-Hong, ZHENG Jian-Jing, SU Long . Development Characteristics and Tectonic Evolution of Cenozoic Strata in Kunteyi Depression[J]. Natural Gas Geoscience, 2011 , 22(1) : 102 -107 . DOI: 10.11764/j.issn.1672-1926.2011.01.102

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